If you like pressing the middle button for tabs in your browser, unfortunately the scroll button tend to jam when pressed

The left/right buttons are pretty large (more on this below), with the DPI -/+ buttons (middle of mouse), to be oddly far back

Unlike some of Logitech's other wireless mice, the G603 can't be used with a USB cable, so whatever you do, don't lose that tiny, tiny dongle!The mouse has six programmable buttons: a left button, a right button, a clickable scroll wheel, a dots-per-inch (DPI) sensitivity adjuster just beneath that, and two thumb buttons

Very crisp and clean button switches and the unlockable scroll wheel is a good addition.

It's so uncomfortable to use those buttons that after 3 hours of game play my hand hurt so bad I couldn't game anymore for 2 days

What went wrong?Well to start off from the day I recieved the mouse the middle button was incredibly hard to depress

The middle button is pretty stiff and also has some creep in it.

The buttons function well and are located to where my fingers can recognize them

I do wish that the M3 and M4 buttons were slightly harder to press, and I often accidentally press them.

Probably not enough buttons for MMO players who need lots of hotkeys though.

If clicked from the front-end of the right-click button, it doesn’t get stuck

As an example of customization, I reconfigured the buttons as follows: the forward side button to a lower mouse speed to help with precise positioning when editing charts and diagrams, the back side button to cycle the mouse speed, and the top button to close a window

This mouse has just the right number of buttons, so you don't suffer from fat fingering the side buttons

However, mine arrived with a broken mouse4 button and it’s too big for my

both left & right buttons are standalone with the mouse itself so you can click them even your fingers are not so long to the edge of the mouse

Enough buttons, smooth and a perfect fit for a girl with small hands who loves raiding and quests.

The G903 lets you configure it left or right handed, but I opted to use all 4 on both sides - it's a bit awkward pressing buttons on the side of the mouse with your ring finger or pinky, but it's helpful to bind something to those keys like the G button or profile swap

Why doesn't each button have a soft glow of light around

Any other button, it worked

dpi buttons are pretty bad in quality, for me, one of them gets stuck

Update, both main buttons have failed.

Differences are: - due to the AA batteries, the buttons are not separate from the shell - there is no weight compartment in the bottom, but you can play a little with the battery configuration as you can put 1 or 2.- lastly, and the more important for me

The mouse feels good in the hand, buttons are easy to press, wheel works fine.

G703 has the two thumb buttons and one button on top that can be reprogrammed, and the button on top is much easier to reach than the two very small buttons on G900, so I'd argue the G703 has more utility for additional buttons.

Many of today's mice have a right click button that's too sensitive and if you relax your hand, you'll be making right clicks like crazy

My only complaint is that the middle click button can sometimes be finicky

Poor quality, I had faulty buttons within 2 months of receiving this

Look up how many people have had problems with the left and right click buttons, and stay away from this mouse

Good luck holding down a button to scope while gaming, it will unscope without releasing the button

The wheel is clicky and doesn't support "free wheeling".The wheel doesn't support left/right buttons on it (e.g. for horizontal scrolling).When connected via a USB hub, the Logitech software may not recognize it

top of the class, buttons also,

and now he is complaining about left/right button double click issue

In spite of my aversion to its noisy buttons and its ugly appearance, it is very functional and having wireless charging is fantastic

Put in my bag and lost the side button... held by tiny magnets

Other than that good weight, good feel in the hand, clicking is good, buttons on the side are nice, lasts for like 6 months at least on 2 AA batteries

Compared to the $84 G703, this mouse includes built-in ambidextrous options, one extra usable button (unless you use the left-handed buttons with your ring or pinky fingers), and a mechanical switch for the scroll wheel mode

Long battery life, great tracking and awesome configuration (up to 4 buttons on side, 2 or left/right handed).

I love the adjustable DPI buttons

You cannot configure the left/right click buttons to perform other actions while g-shift is enable (e.g. navigating browser history), nor assign different scroll wheel actions (e.g. scroll down with g-shift adjusts volume)

Even without the squeak, though, the switches in the left and right buttons seem heavier in the G603, which makes them feel more awkward

is the best mouse design they ever made.. all buttons are accessible via your thumb or index finger plus the button on the bottom next to the thumb PERFECT.. but the G903 I’m trying to make myself like

I use all 4 one at once and after two hours of use with some occasional misclicks I’ve perfected using all 4 buttons proficiently

It is not not a very configurable mouse with a VERY poor middle mouse button.

While the click sound was made and the button is depressed it seems to have an additional sensitivity requirement that is beyond that threshold that if not met will let the button up (even though it's depressed).Just swapped back to my

Switching between the two was as easy as pressing the button

Left and right buttons are sensitive with my big hands

All buttons, primary and secondary feel solid and are comfortable

Now, I’m having them with the right button as well.3 months of use and this $150 MSRP mouse is essentially useless

Lightning fast with enough buttons to make you happy

Switched from Roccat KONE form factor, I feel uncomfortable due to small sizes and light weight of the G903.To whom with short fingers will be probably hard time in pressing left and right main buttons as well with big palm since mouse feels a bit tiny

The buttons and scroll wheel are very responsive and I love all the customization options that you have in including game settings

No Receiver Compartment (for portability)- Questionable M4/M5 button placement and finishTLDR;Don't buy for RGB or portability

Just enough buttons, great scroll wheel (not even sure I can consider buying a non-logitech mouse

it's newer iteration and it shows, button clicks are more shallow and it struggles to detect when the button is physically depressed.

The best way this mouse could be to slim down the left/right buttons and add bumpers on the left/right sides

and i charge it fully in 1 hour only by connecting the USB to the mouse while playing or browsing so u want be bothered by charging it and using it wired